I'd probably replace Vazquez before Lowe. Vazquez is what he is and is only likely to stay even decline from this point, but probably not improve, especially since he just got paid
. At least if Lowe stays where he is, that's not too bad.
There is talk of Iguchi moving down in the order (6-7) this year with the possibility of Pods and Erstadt being 1-2, so beware of that. That probably won't happen til late April if at all though, so you have time to see what works out.