have a read through this article
https://surfsimply.com/surf-coaching/vo ... ht-ratios/ given your age I would probably use the 'level 2' ratio from the above (even though you are a level 1 surfer). Just because youngsters learn faster and so forth
How tall and heavy are you? 6ft is generally shorter than a beginner would want (esp a 6ft softboard, which will probably be designed for advanced surfers to surf in shallow water rather than for beginners). However, you are pretty young and I dont know your height and weight.
Surf booties shouldnt create issues with softboards or grip pads. But if you used (for example) some of the scuba booties with hard soles, then I guess it could catch on the foam.