James, James, James ... Are you sure you want to do this?! It can be done, yes, but should you be doing it? There are special toilets that can flush-up to do what you want to do. BUT, what if there's a leak or if a pipe breaks? Where or where will all the waaaaater go? O where, o where will it gooooooo?
Backing waaaaaay up, there's more to putting a bathroom in a basement than getting water to a spetic line. You need to consider a vent. You may need to consider busting up some concrete. You may need a permit. I know waaaaay too many homeowners, either having 'inherited' a basement bathroom or put on in themselves, where proper thought wasn't put into the job BEFORE they began. For a fact, one homeowner had his system back up 3 time, yes 3 times, BEFORE he decided to shut down his basement bathroom! There are code issues here. Do I hear PERMIT?!
I'm getting carried away here. (I happen to spend a lot of time listening to this kind of stuff at my township's monthly Sewer Meetings.) Consult a few pros to give you estimates and have them explain to you why it cost so much to install things like vents, flush-up toilets, and floor drains. Then you can decide if you're up for the challenge.