I think you are fine with what you are buying in for now. Yes keep in mind that they are rebuys or reentries. So that does effect your decisions too. The 5% rule is a great idea but you have been running bad you said so that effects your decisions on what to enter as well. However you may run well in the low limits and cash well. If you do there is no harm in trying the $5 buy ins but I would stay away from the $11 after you use your coupons. GOOD LUCK!!!