Help choosing hardware

Hi everybody. I need some help with the following:

I’ve got a RB1200 and a CRS326-24G-2S+
If i want to, I could solve all with just the CRS326. But i dont know if this is the best decision.

RB1200 is managing some VPN conections and CRS326 is just switcing

So, should I stay with just the CR326 or keep both?

Thanks in advance!

Define “some VPN connections” ?
IPSEC ? Site2Site ? Mobile Clients with L2TP/IPSEC ?
1Mbits/sec ? 100Mbits/sec (or more) internet services ?

CRS is no powerhouse when running RouterOS, IPSEC VPN is probably a killer for that box if you required high throughput.