This should be a no brainer - just do it. You're going to have these delays with (rec~pb head) regardless of whether PTs is in the picture or not.
Tape's a fantistic sound. I do it here every chance I get. You can nudge any timing issues in PT after you captured into tape. That's kinda one of the rare cases that makes PT shine over tape in that regard anyway (ease of editing).
Just monitor from any takes that have been laid into PT for downstream takes and hit that tape. Suck into PT and realign any delay. You'll find it'll be the exact amount each time and will be just a few keyboard clicks (keyboard actually) of the same amont everytime. *Boom* done.
Example:
1. Acoustic guitar (your next hit song) - record in stereo to the tape, the entire basic structure (vrs/chr/br/lead etc...) maybe mix a drum loop into your headphone only for timimg.
1a. BAM! Suck that guitar into PT (good AD converters only please)
2. Playback guitar from PT into headphones - hit record on that badboy tape and sing w/ your perfect pitch voice!
2a. BAM! Suck that vocal into PT - time align to guitar
3. Call your drummer - hook up stereo overhead mics - you DO have a good room don't you!?
3a. BAM! Suck them Bonham drums into PT - time align to guitar
3b. Have the drummer hit the snare then BD then each tom then HH then cymbs a hundred different ways with the mic(s) first as they were (overhead/stereo) THEN again moved up close to each perc instrument.
3c. BAM! Suck them hits into PT so you can swap the sound out here and there when needed. (*Caution only swap the hits in relation to drummers main perfomance - avoid the PT grid if at all possible.)
4. Bass player - Tape ~> PT. Same thing.
Repeat for the kazoo and banjo players
If it's a whole band then even better! Play the song together each time but grab the 2 takes as stated above for that "band playing togther" vibe.