Hey! Need some help on how much light i should have.

Hey guys! Im new here. Ive done some fish keeping a year ago and now i want to get a 10 gallon with some live plants this time. Im going to get a 10 gallon tank with 6 Neon tetras, 2 Cherry or Ghost shrimp, a Red Ramshorn Snail, and a corydoras catfish. The plan of this setup it to keep money and matience also light to a minimum. The plants im going to choose are Egeria (5-10 stems), Hair grass (50 stems that i plan to spread out 1-3 stems each 2 cm of ground. I plan to use the Hair grass as a carpet when everything grows in and creates new grass) and ofcourse Java moss (1-2 Golfballs of them. I plan to attach them to plastic mesh and grow it in the back of the tank.) My substrate is going to be pea gravel with Seachems Flourish Excell as a fertilizer. I havent decided whether or not i should use a DIY Co2 system because im not sure if i need it or not. So thats where you guys come in! :-D I basically got everything down but just got a few questions.

1) How much wattage would i need for the 10 gallon and all the plants for it to grow sufficiently.

2) Would the plants grow nicely in these conditions (With me using pea gravel)

3) Do i need a co2?

Thanks guys!