I don't think that guy is here anymore, so your advice probably has fallen to absent ears.I have not found pickup swaps to make huge differences. And really t hink going fro SF to Tele sound is a big leap. But If you want brighter there are things to do with the controls that can help. A few come to mind:
-There are HB pickups that are brighter.... not sure compared to the Guild pickups though. Seymour Duncan has ratings for lows, mids highs for their pickups. You could browse those looking for really bright HB's.
-Install treble bleed on the volume pots. This will help the guitar to maintain the brighter sound turned down, like when the volume is wide open.
- Go for a high value volume pot, like 1K pot in lieu of the normal 250k-500k
Are you mainly a bridge or neck pickup player?
Unless he's still here and lurking.