Indeed I can!
Last night I created the exact character you describe. Those High Arcana powers kick the mighty butt. Plus, with 580,000 gp to spend on magical goodies, I picked up a keen longsword +5 of speed, a belt of giant strength, bracers +8, ring of protection +5, ring of wizardry III, robes of the archmagi (I'd say those are required), rod of absorption, cloak and boots of elvenkind, scads of healing, necklace of adaptation, etc., etc. etc., and finally, etc.
But I'm also just about done creating a straight-up, old-school, 19th level monk...and I'm really wondering which is the better choice. Monks at 19th level are amazing otherworldly beings. They don't look like much...but you better run when they get in the hizzouse and start kicking it old-school.
edit: I feel like such a munchkin...I would honestly rather play 8th-10th level characters than 19th level uber-beings. Seems lame to me. Although we'll probably be facing things so amazingly hideous that I will be eating my words...
