That's fine. ^_^
Now, here:
Advantages: The jutsu is more powerful than a standard B-rank when used in conjunction with water, meaning that it makes the combination of this jutsu more powerful than a standard Raiton/Suiton combination, as this jutsu is made specifically for that purpose. With this, you can increase the strength of even a low-ranking Suiton jutsu to do as much damage as an S-rank or more, and negate it's elemental weakness at the same time.
Disadvantages: Unless you can use Y/Y, you'll have to use this jutsu AFTER the water jutsu, which causes problems unless you use the right jutsu, as the electricity won't be able to mix with the water.
Potential strategies: Electrocute a source of water the opponent's standing on to do higher than normal damage for less chakra; combine with a clone to immediately fire a high-powered Suiton jutsu that can't just be walled with an Earth jutsu.
Now give it a shot. ^_^
I concentrate on my raiton chakra for some time then i do the Rabbit or Dog → Boar → Ram → Rat hand seals i then now used the concentrated chakra gotten from concentrating earlier to fire laser beams from my hand which are in form of lightning and electricity.