Even if you don't want one, you do because now you have sown the seed that is going to nag you and nag you....
No - there are better frames out there. But no frame you will ever have will get so much attention. Even in Denmark where hardly anyone has heard of Pace, mine get gazed at, even by those with no concept whatsoever of retro.
I wouldn't ride mine in extreme terrain - I use a fully for that nowadays - but for relatively gentle terrain like undulating woodland tracks, of which there are plenty where I live - and where you aren't putting a lot of strain on the headtube you really do have to be carrying too many pies around for you to be at risk of damaging it.
Things to be aware of:
Headset installaton is critical. DO NOT press the headset in too hard or you WILL split the headtube. Buying used, you don't know what previous owners have done but so far I've been lucky with my RC300 and RC200F6.
Wheel dish: Not sure myself about this. Certainly up to F6 it's an asymmetrical frame so will need an alternatively dished rear. My RC300 has a normally dished wheel as that's what I've been told to use on it - but the more I look at it the more I think the wheel needs redishing - but it is in alignment with the seattube so probably not....
Welds on my F6 are a lot tidier than on the RC300.
Seatpost is a dumb size - but do not use shimmed. And use one that's as long as possible. In general run the seatpost as far down as possible on Paces.
Ridewise - you have to ride them hard. Even with suspension forks, if you don't ride hard then they're boneshakers. They will creak at times but use of silicone at the seatclamp area and thorough greasing of BB shell quietened mine up.
Gil's dropouts are fine for rear discs. Running one on my F6. AFAIK he still has more left.
And finally .The rules of Yorkshire Square. No Fox forks or Shimano hubs please. It's Pace, Hope,X-Lite, Royce, Renthal and Middleburn all the way for these.....

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Completed: 94 Stumpjumper w. M733; ; 92 Dave Yates 731 ; 97 Parkpre Pro-Elite ; Pace RC200 F6 ; Pace RC300; 82 Gios Super Record ; 97-8 De Rosa Giro D´Italia; ; Banani SPX Track bike ; 89 Alan/Mavic Cross Bike ; 05 Focus Cross Team ; 90 Look MI-80 all-Mavic ; 12 Focus Izalco Team/custom build ; 11 Focus Thunder Custom build
Projects : , Brouwer all-Mavic
Stripped : Pace RC303
Gone : GT Karakoram
Stayed in the family: Kuota Kharma, 04 Stumpjumper FSR
Ceased to be : Dynatech MT3, killed by corroded seatstays.