The Adventures Begin

We had the water turned on yesterday and I worked for a couple hours "dewinterizing". Since it was a foreclosure, they blew the water lines out with compressed air and put antifreeze in the drains. The process basically involves carefully watching for leaks as you open the shutoff valves at the fixtures. As luck would have it, the downstair half-bath toilet shutoff valve leaks. Pretty simple fix, but while I had it apart, I replaced the flush valve and the supply line. Should be great , right? No. After I got the toilet back together, I realized that it sucks. The flush is slow (drain/vent issue?) and the wax seal seems to be compromised b/c I get seepage under the toilet. So now we are trying to figure out our next steps. Either we start restoring the bathroom now (currently the bathroom is actually tolerable), or we just replace the toilet and move on to more important projects.