Here's who I want to replace my dad as conservatorBritney Spears has made her move with her new lawyer... they filed legal docs with a name for a person who will manage the conservatorship...as far as business deals go.Matt Rosengart Britney's lawyer filed the documents asking that Jason Rubin be named conservator of her estate. Rubin, a CPA with many credentials, Rosengart believes Rubin is well-suited to handle Britney’s contracts and other business matters.Rubin is an expert in elder abuse and financial litigation. He has also managed complex trust portfolios, according to his website.All of this assumes Britney and Rosengart can remove Jamie from her estate as conservator.According to TMZ's documents, Rubin would have financial authority to manage Britney’s estate. He also has powers of attorney to make decisions about health care and manage real property.These powers of attorney are fascinating. The conservator of Britney, currently Jodi Montgomery, has the power to make health care decisions.According to the docs Britney and Rosengart want Rubin to also prosecute civil harassment restraining order orders.Britney's cash assets are listed at $2,730.454 and her non-cash assets as $57,666,398 in the docs. It is unlikely that this is her entire financial portfolio. There are many Morgan Stanley accounts, and real estate (homes) is valued at $8.455,483.TMZ broke this story. Rosengart will try to remove Jamie, then press full-court to end the conservatorship.