Replacing Front Door and window - Removing wall under Window for full length window

[Algebal]

Sorry if this has been asked before.

I currently have an old UPVC Door with a side window. I want to replace both door and window - but want to remove the wall directly under the window to fit a door with a full length side panel/window.

There are no electrics or pipes to consider from what I can see - and I wouldn't be increasing the overall width of the gap so the current lintel covers the area. I also wouldn't need to remove any bricks near the damp course due to my entrance being elevated. I am confident in using large power tools as I build furniture but this would be my first "masonry" project other than cutting a channel in a concrete slab to fit drains.
The job itself seems quite straight forward but wanted to ask if there was anything I have missed and should consider.. before ordering the door and beginning to remove bricks haha!

 

[crank39]

If going with a composite door and it being hung on the left like your current door then include a heavy duty frame coupler between the door frame and side panel(assuming the manufacturer makes it in two pieces not one whole frame), this will remove as much as possible any whip in the frame when closing the door, ask the manufacturer for their advice and get them to show you the difference between light duty and a heavy duty coupler and cover trim. If its a one piece frame then get them to reinforce both frames internally, as a service engineer I go to lots of these where the frames just wobble in and out when closing but once their made theres not a lot I can do

 

[Algebal]

If going with a composite door and it being hung on the left like your current door then include a heavy duty frame coupler between the door frame and side panel(assuming the manufacturer makes it in two pieces not one whole frame), this will remove as much as possible any whip in the frame when closing the door, ask the manufacturer for their advice and get them to show you the difference between light duty and a heavy duty coupler and cover trim. If its a one piece frame then get them to reinforce both frames internally, as a service engineer I go to lots of these where the frames just wobble in and out when closing but once their made theres not a lot I can do

I was looking at a one piece frame and not something I had even considered! thank you. i will check with manufacturer before ordering.