Well I already have the machines, my node is finally up, and it doesn't cost me any more to run than the rest of my services :/ I'm thinking a good single 500k sat channel would be enough for a little while and maybe 1m sat in the near future?
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