so many options, so little money

So I've been doing some figuring and number crunching to try to reach my goal of a clean S13 with some good power.

Option 1- RB25DET motor
Cost- >$3500
Pros- 250HP/298 ft.lbs, stock. Bulletproof motor. Unique. Super high HP ceiling.
Cons- Cost, probably have closer to $4500 to get it done. Lengthy and difficult fabrication. Higher weight of motor would require beefed up suspension.

Option 2- SR20DET motor
Cost- $2900
Pros- 'Bolt in'. Cheaper to make higher HP. Cost. Possible RHD conversion.
Cons- Cost, looking at an additional $2000 and still not have the power of the RB25. Common swap. Lower HP ceiling.

That's what I'm debating right now. The SR20 is my default motor, but how effin awesome would the RB25 be? The SR20 is an inline 4, whilst the RB25 is an inline 6, and from a Skyline. I'm just a bit leery on the price of the RB25. I'd have to do a heck of a lot of fabrication to make it work, not that I'm afraid of fabrication, but that would lengthen the down time. I'm anxious to get it swapped. But, I'm looking at near the same amount of money to swap the SR20 and get just some basic performance upgrades (blow-off valve, clutch, radiator, e-fans, intercooler, pipes, motor mounts, plugs, fuel pump, etc), and probably still not get the same HP as the RB25, and certainly not the same torque. But then again, I'd almost have to spend the same amount of money in upgrades if I went with the RB25 as well. And with the SR20 clip, I'd at least have the option of a RHD conversion....

My second dilemma is when it comes to the front end conversion...

Option 1- Conversion w/ afermarket parts
Cost- $2100
Pros- Already have the aftermarket parts I want and won't have to buy seperate or have stock parts left over.
Cons- Not sure exactly everything I'd be getting

Option 2- Conversion, purchase aftermarket parts
Cost- $2200
Pros- On this one, I'd have the option of going back to 'stock' if I wanted. Could possibly sell stock parts to make up the difference
Cons- Extra parts to hold/get rid of. Possibly more expensive.

Now, this may seem a bit confusing, but both options contain the same things. Now on the second one, I KNOW I'd be getting a full body kit (front/rear bumpers and side skirts), and I KNOW I'd be getting a full widebody fender kit. With the first option, it only lists that I'd get a FRONT bumper and 'fenders', doesn't state if it includes side skirts, rear bumper, or rear wide fenders. Now both options are comparing identical parts. Also, with the second one, I could in theory sell the stock parts (front bumper, hood and fenders) and make some money back. The more I think about it, the more appealing the second option is to me. Even though I don't think I want the rear bumper in the body kit, it may decide to keep it once I get it.

So far, I've spent close to $4500 and still haven't touched to suspension of wheels....man, this is getting expensive already.