SRM 7 PPS Classic Scenario with Plan Driven Procurement?

Hello experts, I want to know if the combination of SRM 7 PPS Classic Scenario with Plan Driven Procurement is possible? or if there any limitation to consider? Our client needs to create purchase requisition in ERP -> send this purchase requisitions to SRM (as shopping carts) create bids - > quotations - > create contract from accepted quotations and then from the contract we need to create purchase order but this one must be created in ERP (classic scenario) Someone has experimented the same situation? Best regards and thanks for your Help.

Liam