So sorry, Bankhurst, but it sounds as if you are on the way to coping well, and believe me, the first month is the hardest, and it is behind you now,
The loss remains - it would be unkind and stupid to say anything else, but it changes from the raw, aching void and the least little thing making you weep or curse, according to you temperament, to gradually becoming possible to look back with a smile and remember all the good times - without the searing pain of loss, but just a dull ache.
Sorry! I know that doesn't sound like an improvement, but actually it is.
Take your time, deal with what you can manage, or with what absolutely has to be done now, and leave the rest. Don't rush into any major changes, but start considering what might help by all means.
If you enjoy travelling, start playing with the notion of where you want to go this coming summer or spring. If you are a person who likes pets, you might want to consider seriously if you want one n ow.
The empty feeling in the house retreats a little if there is a pet in it, but it is no use fooling ourselves, they are a responsibility too and a fairly great hindrance if you want to be free to go away at the drop of a hat.
Every single person is unique, so no-one can replace the companionship you have lost, but other forms of companionship are possible, and some of the activities and ideas you mentioned having my lead to some good friends in time.