I'm using latex tubes for the first time in combo with the conti gp4000s tires. I want to make sure that all goes right the first time. I have a race this next weekend and want to use this new setup, but be reliable too.

My rim currently has ritchey nylon tape installed and it is 2 years old, but is still in good condition. I also have new cloth velox tape, should I install the velox over the ritchey or completely remove ritchey? or should I keep the ritchey on there? So, tips are needed.