you really need two channels, one you fully pay, the other you pay a fee (typically about 20ksat) one will receive, the other you can send with, and as they progress they balance

and as i said, you can open 100k channels, there are channel peers that allow this, i'd suggest doing a 200 and 300k out and in for your case 

 So I should try to find someone willing to open channels that size? I think that's going to be plenty for now