I am also a NC15 in studio sculpt, I hate being so pale in the summer, but lots of people consider it a classic look, and often say I have a nice complexion, and from the looks of it you do as well
Anyway, in the summer if I do want a quick tan I have experimented with several methods, here are a few;
1. Mystic Tan- Works great! Basically a booth you stand in and get sprayed with tanner while you rotate in a circle. You only have to go once to see results. You can continue going as many times as you like to achieve your desired results. Only down side is it can be kinda sticky initially and you have to wait a few hours to shower. Other than that no streaking or orange tone at all! I am not sure if you have a mystic tan near you, as i live in canada, but they can be found at tanning salons, so it might not be called that where you live, so maybe just look around to see at the tanning salons in your area. USually you can get a package deal, which gives you unlimited sessions, really worth it!
2. Drug Store Self Tanners- Depending on what you buy you can get some great results, you have to be very careful when applying this though, and thorough!!!! I cant stress that enough, Exfoliate and moisturize before applying. I recommend reading instructions on the internet first, so you don't end up with unwanted streaks or blotches, and make sure you wash your hands, LOL. The only downside is it is VERY time consuming and usually only lasts a few days to a week before you need to reapply. The brand i usually use is neutrogena, but experiment a bit till u find one you like, since they are only cost from $8-$12, so pretty decent.
3. Higher End Self Tanners- You can get these on the net or at a store like Sephora. These are more or less from my experience no better or worse then the drug store brands in all honesty, although my friend said mystik tan now makes a self tanning version available and from the looks of it it works! Only downside is if your on a budget it can be costly. I tried one specifically for the face and one for the body by Clarins, and personally I didn't see what the fuss was about especially since it cost almost $40 per bottle, too much!
4. Bronzer- This is just a very simple solution for your face but there are some you can spray on too, and if you do it properly it can give you that sun kissed glow you are looking for.
Anyway I hope this helped a little. As for inexpensive foundation/concealers after your done tanning. I used to just buy good ol' revlon cover up for the few months that I would actually use it. I find when I had a tan I used less cover up anyway.
I hope this helps a bit!