How much time will i do if....

No one can answer this question exactly as many factors are in play. You could be looking at anything from no jail - which is unlikely unless your new case is dismissed - to prison. Initially, as to the probation violation, your probation officer will make a recommendation to your prosecutor. And your prosecutor will have their own idea as to what your sentence should be. Violating your felony probation by picking up a new case is not good. You need to hire an attorney ASAP. They will initially focus on getting your new cases dismissed. And go from there. You have an uphill battle ahead of you. You should hire an experienced criminal defense attorney in your area.

Were you facing 5 years total at the beginning or 15? We cannot say for sure because we do not know what we need to know to answer you.

You are facing a maximum sentence of 5 years in prison on the agg assault charge, plus one additional year for the new mm. Since the charges are separate, they could be run consecutive (back to back).

It depends on your scoresheet. If you got a downward departure at your initial sentencing, then you might be facing the scoresheet minimum at least with a condition 5 violation. Agg assault deadly weapon without intent to kill is 36 points on your scoresheet plus 6 points for a new law violation. If you zero other priors you will score 42.2 (.2 for misdemeanor battery). That keeps you below the 44 points for mandatory prison.