Congrats on your SH - and good choice

. I purchased mine used with over 120k and it runs like a champ . . . smooth idle, great gas mileage, etc. I'm going to share the list of things I hit - this isn't to encourage you to do all of this right away, but to remind you of some of the standard maintenance you will want to eventually address if needed.
-air filter
-fuel filter
-clean egr valve
-spark plugs and plug wires
-distributor cap, rotor, and o-ring
-pcv valve and grommet
-valve cover gasket/gasket kit
-primary and secondary O2 sensors
-all fluids (power steering, oil, coolant, atts, clutch, tranny)
-BG44k fuel system cleaner (optional but effective)
Like you guys, the belts,tensioner, and seals were my first and foremost concern, so I knocked those out right away. For the basic maintenance stuff, I went with OEM parts purchased through a dealer with wholesale prices (at least 25% or so off). I see you're in MD so I'll mention that I go through magauto.com which is really Mechanicsville Honda in Richmond, VA. The guys there seem to know their stuff so you can ask parts questions over the phone. Plus, if you order online, you get free UPS ground for orders over $75.
Keep in mind that Ludes tend to consume/burn oil between oil changes, so make sure you're checking your oil level periodically - I just do it when I'm getting gas nowadays and add oil as needed.