When you are building up your kit you should think seriously about what you really need and how it will be used then (usually) buy the best you can afford instead of thinking one brand fits all. Cordless tools are handy but most times cheaper corded tools are better even than expensive cordless.
Ryobi are only really for light trade use. They have plastic gears which will strip if you put a lot of pressure on them.
You will need a cordless drill/driver. What will it be used for? Mainly driving and drilling the odd 6 or 7mm hole, maybe the odd holesaw?
Get a decent 14v. Much lighter and easier to handle than an 18v and with more than enough power.
Something like
AEG BS14GNC142C 14.4V Drill Driver - NoLinkingToThis, Where the Trade Buys at £70 it is an excellent buy or for another ton
one of these
Bosch GSB 14.4-2-LI L-Boxx 14.4V Combi Drill - NoLinkingToThis, Where the Trade Buys
For drilling a lot of holes or bigger sizes a decent cordless SDS will be beyond your budget so get a corded like
one of these
DeWalt D25112KL 110V 2kg SDS Plus Drill - NoLinkingToThis, Where the Trade Buys.
This has as much power as all but the best cordless SDS.
Do you really think you will need a reciprocating saw? They are handy but you won't use it as often as you think. Buy a cheapie in the meantime if you think you need one.
Circular saw. If you do heating installs this tool is an essential. The cordless ones are not powerfull enough for anything serious. Get a corded.
Angle grinder. Very useful. Get any cheap 4 1/2" one for around £20 and a cheap diamond blade for under a fiver (it will cut metal too). If you burn it out bin it and buy another.
A cordless torch? Handy but buy an ordinary one and a trailing light. Every bit as good, infact better.
If you find you may need some heavier stuff, SDS Max, core drills etc, just hire them as you need it.
As i said think carefully how you will use them and buy to suit. Happy shopping