You could get a wifi adaptor and install it later if you need it. A 500 watt power supply is recommended for the GTX 970, so 550 watts will handle it. I have some recommendations for power supplies:
XFX 550 watts for £45 - non modular
Corsair CX600M 600 watts for £56 - semi modular
EVGA Supernova G2 750 watts for £88 - fully modular, and high capacity in case you want to run a second GTX 970 in the future
For mATX motherboards, I recommend:
ASRock Z97M Pro4 for £76 - budget choice, solid price to performance ratio.
Gigabyte GA-Z97MX-Gaming 5 for £110 - upper limit of your motherboard budget, but has lots of features like SATA Express and M2 support, and twin BIOS chips.
Sorry, I'm not knowledgeable about monitors. Are you buying that 4670K used?
Thanks for the suggestions. Am actually getting the i5-4690K made a mistake there. I thinking of taking advantage of the intel cashback offer atm
Think I will go for the Corsair CX600M for PSU and Gigabyte GA-Z97MX-Gaming 5 for MB. One question the MSI Z97M Gaming is £3 cheaper on amazon is it worth going for that instead or is the Gigabyte board better?
Thanks again.