Where to now.?

I am looking for some advice as to my next move.
I am about to take delivery of some KR Kronzilla monos.
I have had the KR P135 preamp for a while and rate it quite highly. Not the best in any one department but among the most musical and enjoyable I have heard.
my questions are the following.
Is it good enough to to pair with the world renown Kronzillas. My thought process is that KR think so or they would have made something else.
will I get much more if I go for a more highly regarded pre from different manufacturer.
I have an opportunity to also get a WAVAC PRT1 which is very highly regarded

but not sure if it will pair as well over all

love to hear your comments.