This is how I see YOUR best options:
1-Keep your A3000T. After all, you like your beast and it costed a lot of time, money, and dedication to properly upgrade it to its actual state. You download the latest version of NetSurf to surf the web and give it some slack for now.
2-You split the entire setup and sell it on ebay, piece by piece, as it will be the only place where you could probably get the kind of money you expect from your A3000T setup.
I hope it helps
