If I player wanted 5 ranks of a profession skill other than herbalist IMC then I would let them have it for free. If they wanted a craft other than weapons, armor, bows, poison, or traps they could have 5 ranks for free. If they wanted a level of commoner when they created a character I'd start them with 1000 xp. If commoner was their only class, I'd start them at level 5. If you want 2 or 3 feats for roleplaying purposes you can have them for 1 feat choice. I figure 3 bad feats should be close enough to 1 useful feat. I wouldn't let 3 for 1 feats be used as prereqs for a prestige class though. I've considered making a bunch of lesser skills purchasable 2 for 1 such as jump, climb, swim, craft, profession, knowledge (other) and use rope.
Once you have 12 ranks in perform and a masterwork instrument you can give enjoyable performances in your sleep and give extraordinary performances 20% of the time. That a pretty good minstrel in my book.