You could set up five frontlight
wash areas across the
stage: SL, CSL, C, CSR, SR. One
RGB and one amber
par for each. You would focus them straight on (instead of coming in from a side).
About the standard
par cans: I would have three things against them.
1) You will have different qualities of light, because one will be
LED and one will be standard
incandescent.
2) You will have to hook the standard
PAR's up to dimmers.
3) You will have to replace
PAR bulbs.
LED's will last for much longer than
PAR bulbs.
EDIT: Also, don't forget to add a
DMX splitter to your budget, get the
Doug Fleenor 3-output model, and Premier Lighting has a good price on that as well.