Unless you avoid Paypal for selling on eBay, selling them can result in a Paypal dispute and you losing it, as you will have no real way to prove you sent the BTC (don't expect them to understand the blockchain). And if you're from US, there's simply no way not to accept Paypal. We Europeans at least have that choice.
But either way, if I understood you right, you are basically saying you will make roughly the same amount mining LTC and BTC, so any of them should work for you and you could do some tests to see if the eBay BTC selling option works for you.
Thanks Crypto, I didn't even consider the whole Paypal dispute thing. I wonder if that's a huge problem, or if I'd be safe. I guess I'll just test and learn!