Crossover component selection help

I'm about to rebuild the internal mid/high crossovers in my Magnepan 3.6Rs with better parts. I biamp, so I don't use the external crossover. All I'll be rebuilding is this. I'd like to keep the cost, excluding wire and connectors, to under $1000. If that's not possible or if there is significant improvement to be had by spending more, I can stretch the budget.

Since I don't know much about what caps and inductors sound good, I could use some help. I'd like to lean away from bright sounding parts since the system probably tilts slightly in that direction already. Parts that lean slightly toward lush or rich sounding would be preferred as long as they don't sacrifice necessary detail. Any size components are okay as I can mount them externally if they don't fit within the original crossover cavity of the panels. What caps and inductors would you use for this? Any help would be greatly appreciated.