Tired Engine

I recently put 15-40 oil in the car and it seems to be pretty happy with it. But is burning oil and showing some signs of age. When the times comes, I'll have a few different options that I'm starting to explore.

• Sell the car and get a new BRZ: $28k
• O'Reilly sells PowerStroke rebuilt engines for $2350 with a 3 year warranty. Additional labor to do the engine swap could be $1000?
• It's rumored that used engines could be had for $1000, engine swap additional
• JDM engines (partly used Japanese engines) are supposedly also $1000, plus engine swap.
• Treasure Coast Miata sells rebuilt heads for $550 and rebuilt short-blocks for $1250, no core charge. Additional labor to pull the old engine and install these parts once assembled. 
• Get a machine shop to rebuild a head: $500 and to clean the short block $300 (?). This obviously involves the adventure of doing some work myself, but also means there is a chance to upgrade some of the internals:
• forged pistons that are worth having if there are any plans to turbo the engine beyond 250 hp. Seriously, 250 hp in a Miata is a lot. The pistons are something like $1000.
• forged connecting rods are useful in the same situation, also $1000.
• Flyin' Miata does have a stroker kit that includes pistons and rods as well as a larger crank that raises the engine's displacement to 2.0l  $5000!!!
• Special pistons that raise the compression ratio to 11.0 instead of 9.0  are available: $1000. No turbo with these.
• Special valve springs can be had that are good for 9000rpm instead of  7000.  I think these are for a naturally aspirated (NA) engine, not Forced Induction (FI).
• Flyin' Miata has a lightweight flywheel and stronger clutch combination available for about $500. The clutch would ultimately be necessary if a turbo is installed. The lightweight flywheel is more of a race, track day, or High Performance Drivers Education (HPDE) thing.

I'm leaning towards a stock build with the flywheel and clutch.