You can actually get this particular rifle to shoot very nicely and actually last a LONG time with mostly the stock parts. Most important things are the barrel and hop-up/bucking for this rifle.
Not saying that full LayLax/PDI set-ups aren't worth it, but I do agree with you hoggie. I would build it up slowly over time, and like I said, start with the barrel/hop-up.
To the OP, this seems like a great budget build. I would look into the PDI hop-up chamber, or tryout the R-Hop with the stock chamber and that may make it a bit more accurate at longer range. Another thing is compression. Since that affects shot to shot consistency, try to get a 100% seal. You can test this by plugging the tip of the barrel and firing to see if there are any leaks.
Not saying that full LayLax/PDI set-ups aren't worth it, but I do agree with you hoggie. I would build it up slowly over time, and like I said, start with the barrel/hop-up.
To the OP, this seems like a great budget build. I would look into the PDI hop-up chamber, or tryout the R-Hop with the stock chamber and that may make it a bit more accurate at longer range. Another thing is compression. Since that affects shot to shot consistency, try to get a 100% seal. You can test this by plugging the tip of the barrel and firing to see if there are any leaks.