I would be very suspect of anything shorter than two minutes for FB paper, and in fact as I mentioned I don't like anything shorter than 3. 5 is better but I get impatient. Of course exposure has to be adjusted accordingly, and do mind the safelight. Even with a tested safelight my prints spend the majority of that time face down.

RC papers can usually get by with 90 seconds but I tend to use 2 minutes. For one thing, longer times mean less variability from error. If you have trouble lifting the edge of the print with tongs, for example (I use tongs) and give it an extra 15 seconds messing around with that, this is 25% more on a 1 minute development time, but 1/12 or 8.33% more on a 3 minute time, which will never be noticed. The 25% often will.

I use LPD 1+2 for neutral tone papers and Ilford/Harman WT 1+9 for MGWT FB.