Financing a Rehab - would love some advice!

I am financing a rehab on a new quadplex, and wondering the best Credit Card to get/apply for with no APR for 6-18 months and pretty lenient with credit limits. Or if someone has a better strategy?

My liquid position is lower than I like it atm (I'd like to build it back up before spending cash, so that is why I was looking at use credit cards (90k out of pocket to buy the 4-plex), we will be getting $1,100 per unit when it is all fixed up. We are estimating that we'll need 12-15k for total cosmetic rehab.