I'm want to make a homemade horror movie...help please?

Okay so me and a few of my friends wanted to make our own homemade horror movie to put on YouTube, We've always been a fan of horror movies and love watching bloody and gory things. So since we we're such a fan of them, we decided to make our own.

Plot:

It's going to be about a girl and a few of her friends who are left at home late at night, while her parents are somewhere else. They hear strange noises outside so they decide to go investigate. They find a dead body outside and start panicking, so they run back inside lock all the doors and try to call the police- but the power had been turned off from the outside. They immediately start to become even more scared and start to search for their mobiles, a few minutes pass and they can't seem to find them. One of the friends looks outside the window and finds their mobiles in a pile amongst other important things that could be used to contact people. Each friend is to scared to go outside, so they decide to hide until the parents get back home (about in 2 more hours). They hide in a wardrobe, and start hearing thumping coming from downstairs, they hold their mouths trying not to scream.

So each of the friends has to try survive in the house before the killer get's them...

Other stuff:

That's just some of the main details, of course there'll be a lot more when we actually direct the movie.

We originally thought of using a classic serial killer such as Jason or Leatherface because they we're scary. We then decided not to use Leatherface because we didn't want to accidently break anything using a chainsaw, and we didn't want to use Jason because after then we had decided to make up an original killer of our own.

So, just a few questions:

1) Blood- does it look more real to use fake blood, or is there a recipe that i could make that looks like real blood. AND DEFINITELY NOT USING TOMATO SAUCE!! ...so for blood what do you think we should use?

2) Serial Killer: What would be a good look for the serial killer (example: costume, face) and what could be the name of the serial killer (something scary that sounds good)

3) Weapons: What weapons would be good and scary for a serial killer to use (example: maybe something that might not have been used a real lot before- but not something stupid- things like knives and tools are also good)

4) Kills: What do you think in some scenes would be a good way for people to die (example: stabbed to death, chocked, drowned, hung, butchered)

5) Butchering People: How can we make this look real and not fake? HELP WITH THIS QUESTION!!??

6) What's a good editing program I could use to make the kills and blood and gore look effective?

and 7) WHAT WOULD BE A GOOD TITLE FOR THE MOVIE (mainly ones that have never been used before or a lot!)

THANKYOU EVERYONE WHO COMMENTS!!! :):)