Review the Vans SBs
SB-07-11-09 is for the inspection and replacement of nose gear legs U-603, U-603-1 and their associated forks, which must be replaced with U-603-3 leg and WD-630-1 fork.
There is no such thing as a "Conditional Inspection". The condition inspection is to determine that the aircraft is in a safe condition for operation. The aircraft's operating limitations will have the correct language that is required for a legal condition inspection sign off.
The anti-splat device is a non-Vans, aftermarket item that is a very good addition safety enhancement to a 6,7,8,9 A models.
Your best bet is for you to review the Vans SBs, so you a have a thorough understanding of them before you buy any RV.