As an electronic music beginner hoping to create original dub, breakbeat, reggae, jazz, R&B, melting pot songs, with the ability to produce all the tracks, form the drum and bass lines, to the melody/instrumenals, it seems there are countless ways to approach equipment selection.
recommendations so far have been;
1. Korg Trinity with akai s2000 sampler
2. Korg Karma with akai s2000 sampler
3. Korg Triton Pro
4. Everything else

any suggestions?

You have listed pro keyboards not arranger keyboards . I can try to help you .
I would look at the new Yamaha Motif . Reads Yamaha and Akai samples . Great specs .
The Triton has a sampler on board . I do not feel it would necessary to have the S2000. The S2000 has been discontinued for awhile.
Check out the Motif ! Bad name but should be a great keyboard . Dan o