Advice on Upgrading A4000

[hamtronix]

My setup is my sig.

I was wondering if anyone could give me any advice on what would be the most cost effective and least expensive upgrade I could do for the A4000. Or let me know that Im at the limit without expending a ton more money. I have GVP scsi controller with 4MB of RAM, Im pretty sure I could add more to that. Also maybe a CD drive. Does the CD drive in the A4000 use IDE or SCSI?

Thanks and as always Amiga.org is a great resource and has wonderful members!

[hamtronix]

cv643d wrote:
If your 040 board is the C=, save up to a CyberStorm 060, its going to cost a bit but is well worth it if you are serious about classics, ~250-350 euro.

As much as I love Amiga and have very fond childhood, teen, adult memories of my time with Commodore it would take a windfall for me to spend that kind of cash on a single card. Or at least until the US dollar has value again.