Owning your own home

Selling advice needed: would it be likely to return investment in smartening up the front of my terrace flat in preperation for selling?

Things that need doing that I've never got around to are:

1. mending a few bits of crumbled ribbon pointing
   
2. mending 1m length of edging at bottom of bay window
   
3. scraping off flaking paint at <1m, making good stone and overpainting
   
4. replacing broken tiles & steps with new recon stone / concrete slabs
   
5. filling and painting front door
   
   

Unfortunately it looks like I'll have my hands too full to do these myself, which was always the plan, so would need to pay someone.

Or do I just leave it to the buyer. Received wisdom is that 'kerb appeal' is quite important, but it's all extra cost to fix.