I think you have to consider the length of the kayak too. If you are on 14foot kayak, for me it needs to be at least 7’ in case you hook a nasty fighter fish fighting all corners of your yak. but if u are on 10-12’ yak, its best to have 6-7’.
im on hobie PA12, my artillery are 2x 7’ and 1x 7.3’ for heavy casting. Im 6’ person. My setup suits me well with no issues.