you need solid CPU and some amount of RAM which the Raspb does not have. No need to torment your little raspi

How about Odroid XU4 or similar with over 4GB RAM?
I've never used the Odroid, but it looks like it uses an ARM processor as well. I had to find a few work arounds on the pi to get the software to compile on the ARM processor. In the end I think it is more cost effective to use an old pc or a vps. It is definitely less headaches to get and keep it running.