Another point that applies to any banjo you decide on is 5th string capoing. As a singer who uses his banjo for accompaniment, I often need to play with the capo on the 2nd, 5th, and even 7th frets; I generally play out of a modified C-tuning which seems to give me the range of melody notes that I want for many songs. For the 5th string I've drilled and hammered in the HO gaugue railroad spikes at the appropriate frets under the 5th string. I still have an inexhaustable supply of the little darlings, by the way, in case anyone wants to PM me for some. Other folks prefer various 5th string appliances that accomplish the same thing but strike me as somewhat garish.
I doubt that you will really need a resonator for jamming, especially with a tone ring. Banjos are heavy enough without adding another few pounds.
A good strap is essential for stand-up playing.