This is about the same set up I use in the ADK's for bug season (mostly blackflies and mosquitoes.) I usually head out with a partner with that set-up though. It is for two people.
I have a GoLite Nest 2 and a 9x11 Equinox UL tarp. I generally use a trecking pole or found stick or the front. The nest can attach to the stick or on a loop on the tarp. If I use the trecking pole, the tarp just goes over the soft end and gets staked out, the nest attaches to the line for staking.
At the low end I use a found stick, around 18", I think...never really measured it.
I used the same set-up when I did the NFCT, so it went through many rain storms, lightening storms and some fairly rough winds (30+mph.)
The problem with this is that GoLite no longer offers the old nest series. I paid well over 100 for it, but it went down to 60 a few years after that. A near equvalent can still be had. This is close:
I think it is a bit expensive, at 160. This is 89" long or 7'5".
They also offer a solo-long (an inch longer at 90"): http://www.yamamountaingear.com/index.php?main_page=product_info&cPath=12&products_id=68
They want 110 for that one.
Both look like they would fit you and weigh less than a pound. Both have bath tup floors, so drips/spray won't be a problem.
For tarps, well, thats a bit different. Both shaped tarps and square tarps will work, with shaped tarps being slightly lighter (about 18oz.) A square tarp will likely be a bit heavier. You want the extra length over the bug shelter. For 90" I would say about 10'. Width shold be about the same. Likely this would weigh about 20-24oz. Of course, you can go with cuben.
You will need about 14 stakes to insure it will stay up in bad weather. In not windy weather you can get away with 10...about 4oz.
This is a real versitile system if you use a flat tarp. In early spring and later summer/fall you can drop the bug tent.