carrots,
I can answer some of your questions but I am on the 73 so the 75 may differ.
1. Company has a pension scheme although need to ask them for further details. Life assurance scheme (death in service) 3 x basic salary. A contribution of £200/year is offered for recurrent medicals.
2. No crew meals provided so bring your own.
3.Sector pay for 73 short (less than 1000nm) £6, medium (1000-1300nm) £7 and long (>1300) £8. £2.10 duty pay which is subject to HMRC. For additional sectors of 3 or 4 extra £4/sector (only for extra sectors) and 5/6 £8/sector (again only for extra sectors).
4.Depends if you are 100% OR 70% as to your usage by the company.
5. Command based on ability and hours NOT seniority so subject to captain requirements/your sims with Jet2 they will upgrade you as required.
Hope this helps