I've been considering a pump but I'm pretty set on 5/10 gallon batches with BIAB so I don't think I'd find a need for one!
Do you have a ball valve on your BIAB kettle? I have a 11 gallon pot for BIAB and I am looking at putting a weldless ball valve in it.
I have a nice mill already. I do have a weldless valve on my kettle. It's nice. I drain the first 5.5 gallons into a bucket (I ditch the first pitcher worth because it is heavy with cold break material that settles at the bottom while chilling). and I hand dump the rest into the other 5 gallon bucket.
I actually just bought a thermopop today on Amazon for like $26. So I still have about $100 to blow lol.