At the risk of repeating myself then. To almost certainly see a COFP (fixed Penalty Offer) for the first offence of 44mph in a 30 limit, I would return this form on its own in the first instance, naming yourself as driver. This would ensure that a COFP can be issued giving you time to respond and accept points/fine.
If you delay on this, it is possible that they may decide a time out is possible and will issue a SJPN instead. You could ask them to apply sentence at the same level as a fixed penalty, but there is no guarantee they will adhere to this meaning 4/5 points and larger fine/costs instead of 3pts & £100.
For the second offence of 50mph, it will be heading to SJPN anyway so no need to rush. Normally it wouldn't matter in delaying, but given the offence was end of November, if you wait the allowed time available and return the form so as to reach them on day 28 it often takes some time to process a SJPN. There are few to no guarantees, but it does slightly widen the possibility of a time out in your favour.