Different Headlamp

[74eldiablo]

I have a 2001 bike with a phillips lumiled H4 bulb fitted which is fantastic, I decided to buy a high power H1 led for the main beam which arrived today but sadly the round end wont go through the small apeture made for a normal H1 bulb...... bugger.
it looks a bit shit with a crap halogen h1 and a superbright H4 led. i ride in the dark so light is important.

Now i'm definately converted to LED bulbs as the difference between the lumiled H4 and the std H4 was pardon the pun (night and day)
I'm thinking about losing the top fairing and just having a single 7" headlamp instead (with possibly a headlamp fairing at a later date)
so i've seen this headlamp on fleabay.
https://www.ebay.co.uk/itm/7-Daymaker-40...2180490055
I'm wanting to know will this be possible to wire into the std fazer loom?
i'm ok with cutting crimping soldering and heatshrinking wires etc but dont want to chop the loom only to find it wont work.
obviously i will need a headlamp housing and brackets so any advise as to whether this will work
do i need that ring that comes with the headlight to fit it into something like this?
https://www.ebay.co.uk/itm/Motorcycle-7-...2985459260
or will it fir without the ring.
I quite like the idea of a streetfighter type fazer with the option to change it back should i want to at a later date.

cheers