Have a look at REI website, they carry good quality gear. The type of terrain your heading into plays an important factor. If you are going to see some wide open prairie country or higher elavations, wind can be an issue. Alot of cheaper tents are made for family camping not high winds. REI staff can point you in directions of good strong tent that will withstand wind. Makes such as North Face, Marmot, Sierra Designs, Mountain Hardware all make tough backpacking tents and larger ones as well.
My theory on this is, if headed into hills I'll carry my own tent and everybody else in group does the same. Small two person backpacking tents (6 lb and under) are good for one person and gear at best. I don't have much faith in tarp,bivy or tpee in mountains when weather can get ugly fast. I use a North Face Mountain 25 it's pretty much bomb proof.