This is an expeimental thing. Did note your question, previously, but figured that you'd figure it out when your system is set up in TX.
IIRC, set my Classic-charged system at about 49.4-ish V, where Float is about 52.8V. In my opinion, you really do not want to do any additional charge cycles on a given day if you can help it. But, with a smaller capacity battery bank, ReBulk is much more important, as you do NOT want to flatten the bank.
You have quite a lot of PV, which should run the A/C and other larger loads fine when in Float (I do forget your well/pump setup). Even if you have insufficient PV power available when in Float, ReBulk will do no good at that time. In stormy weather, when available PV varies a lot, and with a smaller battery bank, ReBulk if probably an important setting to get ironed out.
I've run my MX-60s with ReBulk disabled for seven years now, without any problems. Opinions may well differ. Vic