If you want suggestions for daws (idk if ive mentioned them in discord) i would recommend Cakewalk by Bandlab or LMMS as they are by far the most stable and most supported free daws out there, i personally prefer cakewalk but I know people who swear by LMMS's workflow so to each their own I guess. I don't know how Beepbox works, but if you want VST instruments to get you going with a similar style look into Magical 8 Bit and NES VST for base chiptune sounds and sForzando to use soundfonts which will help you navigate a lot more retro sounds in the style you want. SurgeXT also has excellent synth options which I think you will like for expanding your sound (apologies if this is information you already knew, i have genuinely never heard of Beepbox so have no idea how it works and figured this is more likely to help then hurt haha, also everything listed here is free!)