Don’t wait! If you don’t apply until September you definitely wont have a finalised EHCP before the normal admissions round closes so you will have to apply via the normal admissions round as a back up. And if you don’t apply until September if you have to appeal multiple times you may not have a finalised EHCP for Sept 2023.
Be careful with SENDIASS, some are good but too many give incorrect advice and repeat the LA’s unlawful policies. They receive LA funding so aren’t completely independent. IPSEA and SOSSEN are better.
Unless you are lucky independent assessments are likely to be more detailed, specific and quantified, but, personally, unless money isn’t a problem then I wouldn’t bother getting independent reports just yet. If the LA agree to an EHCNA SALT, OT and EP reports can be part of that. Then if you need to appeal you can target what assessments you need e.g. the LA’s EP report may be adequate but you may need an independent OT. This also means you don’t risk the report being considered out of date by the time you get to Tribunal - previously reports within 2 years were consider up to date but recently some have found SENDIST consider their reports out of date when younger than that.
a lot of the EHCPs were so vague that they didn’t actually equate to the children getting the support they needed
Sadly, this is true, unless you are on the ball and know what wording to pull the LA up on. For example, many parents think “access to SALT” or “1:1 or equivalent” means it will be given, but they aren’t enforceable.
To add to Ellie’s post, many are finding their first hearing date adjourned due to lack of court time.