Tents that erect from the outside, single wall or fly with inner attached or single wall with inner poles

My wife and I spent 3 nights in my SMD Lunar Solo (older version before the increase in peak height and taller bathtub floor) which is called a 1.5 person tent. When pitched on the low side (still a slight bathtub) we had room for both our 20" Thermarest X Lite pads side by side. There was the tendency for my wife's head in the back to be contacting the top of the tent when we stayed on a badly sloped site. I believe much of this is due to the thick pads. Condensation is not usually an issue but the one night that is was (pitched real low to combat a very strong wind that trip) it was so far below freezing it was just ice on the inside and no real issues getting wet there. Its a real tight fit and you have to coordinate things like eating, dressing, etc., but there is a very sizable vestibule. The best part is the tent is very affordable and at only 24 ounces it works if you don't mind being pretty damn tight. Plus you can entirely set the tent up in the rain from the outside while the inside stays dry. The vestibule is large enough to be able to cook under or squat very low to take off your jacket prior to entering. I particularly like the way the vestibule can be half rolled up making cooking form inside much easier. A two person tent would be preferable but we love the coverage we get from something that compresses to the size of a grapefruit, cost about $200, and weighs 24 ounces. Any thing in the two person variety with full coverage at that weight seems to cost lots more. If anything I think this can serve as a very bare bones relation to floor space, etc. Good luck in your searches.

Have been looking in a similar vein and can share some thoughts on what I have come up with so far:
First off, there are some "freestanding" tents in the weight range you are after but none that I have found can be set up fly first and then clip in the inner (or set up fly and inner simultaneously) to meet your setup in the rain requirement. Then there are some tents that do allow fly first setup but they are not freestanding (i.e. TT Stratospire 2).

So unless you can find some tents I haven't seen yet, you first have to decide which is more important – freestanding or the ability to pitch without getting inner wet. Though there is one close possibility – a Double Rainbow with trekking poles (or dedicated end poles) can be freestanding except for the vestibules, and even with dedicated end poles would still be under your weight limit.

Re the Hilight – pretty tight squeeze for 2.

Highly recommended. I had the 1P and now use the 2P.

Caution: If interested in buying, email the owner first. If he has tents on hand, delivery will be rapid. But if not, be prepared for potentially long wait time.

It's about five ounces heavy for your desired weight limit, but you might want to take a look at the KUIU Mountainstar. It pitches all as one piece with the poles on the outside. They claim that the pole structure is a 4 season but that it has the ventilation of a 3 season. 2 doors w/ vestibules. It's a bit pricey, but most tents are that use carbon poles.

How about a 1.5 person?
I have looked at them many times in the past but Prefer freestanding

Big Sky Mirage 1P or 2P Tent
I have looked at these too and they look like a nice design and are light.

KUIU Mountainstar
Thats a nice one too although a tad heavy.

Found a new hilite for $285 so will try that out for size and if good to go might consider adding a full mesh door. If not I think I will go to a big sky tent.

The Big Sky Chinook looks like it would fit your needs. Be careful with Big Sky. If they have it in stock they ship fast, but if not, you might be waiting a while. I am still waiting for my Chinook 2p I ordered in March and nobody will respond lately . . . Good thing they don't charge until they actually ship it.