A bit of preventative maintenance is almost always cheaper and safer than waiting until something breaks.
If it was me;
1. I change it at least every 2 years. If this is a new bike and you don't know how old the coolant is, I'd do it now.
2. Probably OK but inspect and decide. I probably change them alot more frequently than necessary but it hardly breaks the bank.
3. SS lines are a worthwhile mod. If the fluid's very old it'll be dark brown but, again, if you don't know how old it is I'd change it. Then you know for sure and you've reset the clock for when it needs done again.
4. Remove the caliper, take out the pads and pump the pistons out a little. Clean them up with water and whatever bike/car cleaner you've got. They should push back into the caliper with thumb pressure - I usually smear a little red rubber grease round them first. If they're hard to shift/rusty/caked with crud then I would strip and rebuild the calipers - you can often save the seals. It's up to you to decide if you're happy to do this work yourself or not.
5. I'd personally prefer to change 7 year old tyres. In any event, many people say the stock fitment weren't that great when new. I've certainly ridden on older tyres when funds dicated but if you're used to playing with quick cars you can probably stretch to new rubber.
Apart from the tyres and brake lines, the rest costs nothing in the grand scheme of things. It's a no brainer.