VoIP

Hi,

i'm managing a voip system in the company where i work (i inheritted the system). We have a freepbx system running on an old pc which sounds like it's going to give up anytime soon. also i don't like how slow and limited the machine is (takes 5+ min to access the web gui, freepbx not activated, no admin console and overall i never worked with freepbx). first idea was to get a new machine and run 3cx self-hosted, but their yearly subscription went thru the roof recently. i was managing 3cx before and i know to admin it, but pricing is uff.

so option 2 is a hardware dedicated voip central - grandstream ucm6301 sounds like what we need - we have 30 extensions, a few call groups, a simple IVR with 5 selections, work hours and out of work hours recording and routing, plus a few rules for internal calls going out thru the gsm gateway.
all extensions are 3 digit, cisco and yealink ip phones. no analog phones. 2 sip trunks to provider. No mobile phone app needed.

i'd buy 2 and use them in HA mode.
also we have a video door phone that works well with a yealink phone, so not sure if i need a grandstream that supports video, but the price difference between ucm6301 and ucm6300A (audio-only model) is not big...
system is running on it's own subnet on a vlan. trunks are connected to a provider directly with no internet connectivity (dedicated voip port on the ISP gateway).

any advice on this ? IS this a good choice of hardware and overall upgrade?

thanks