Hello,
I'm not able to understand what you want to do.
But I can tell you that you can have the same product for Subscription creation and renewal.
If you're using the recurring system, the product price in the order will be use as the recurring price ; so if you're using a plugin to change the product price (like an item custom field with a custom plugin), that price can be use for recurring.
Product options can be include in the recurring process only in very specific conditions.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.