Hi Siobhan,
I have just looked over the thread there and I am somewhere in the middle of the two camps. I have two young kids, and the idea of spending 1200 euro a month on socialising would frighten me senseless right now ! Not so much from the spending, but from the recovery time
That said, you are both at a milestone in your lives, and your lives will probably change a bit over the next while in any event. You also like the idea of having kids (which is not cheap as many said) and also want to upgrade the house (potentially). All of these cost money, and this will all need to come from your earnings (or inheritances) ultimately.
Instead of looking at things like socialising from a weekly budget, try moving it to a monthly budget instead. Try using cards, including contractless, for most of your transactions (once you move towards a more fee friendly bank), so its easier to track and categorise them. I am not a fan of keeping every receipt, but using contactless (for a period) will at least show you where the funds are doing.
Why not half your socialising budget, by adopting a week on/week off approach to it - so every second week is a quiet one - watch a movie at home or go for a walk etc. It still gives you 2 decent nights out each month. Call it 'part of your settling down' phase
Most of the rest of the stuff can be tackled, but I would agree to reduce your debts as quickly as possible - any overpayment wil have large benefits in terms of interest paid on the money. I imagine you are paying ~4% on the loan given 7 years/275 a week/87k. If you were to divert 500 a month from your socialising budget towards it, you would save 4270 on interest and have it paid 2 year 3 months earlier. Paying 20k of your inheritance against it (in addition to the 500 a month), would give you an interest saving of 7300 and pay it off 3 years/5 months earlier.
I know it may not be the 'cool' thing to do, but remember by the time your loan is paid off at the moment, you will be hitting 40, and hopefully other priorities in life !!
I agree that if you are planning to have children, you should hold back some of your inheritance - probably 10k to cover an extended maternity leave and other incidentals. The other 10k you can put as a reserve fund, which is always good to have.
Hope this helps and try and have a nice balance between your current outlook on life, with your future plans and reach a happy medium that allows you to plan for your future.