DNS On Plesk: Check My Master DNS Settings Please
First, I am looking for someone to confirm my master dns settings, not to teach me how. Just confirm.

I want to run primary and secondary dns on my Plesk server (yes, I know this is not supported by Plesk). I think I have this right. Please, if you know the answers, confirm for me.

1. I have setup a domain to serve as my dns with my registrar.

mydomaindns.com

2. I have setup primary and secondary name servers for this domain at the registrar, based on itself.

ns.mydomaindns.com 61.108.112.149
ns2.mydomaindns.com 61.108.112.150

3. I have added the domain to the Plesk server on which it will serve as master dns. I then altered the dns record as follows. I think it is correctly configured.

===== MASTER DNS DOMAIN, SETTINGS =============
$TTL 86400

@ IN SOA ns.mydnsdomain.net. bm.myserver.com. (
1081306725 ; Serial
10800 ; Refresh
3600 ; Retry
604800 ; Expire
86400 ) ; Minimum

mydnsdomain.net. IN NS ns.mydnsdomain.net.
mydnsdomain.net. IN NS ns2.mydnsdomain.net.
mail.mydnsdomain.net. IN A 67.108.112.147
mydnsdomain.net. IN A 61.108.100.147
webmail.mydnsdomain.net. IN A 61.108.112.147
ns.mydnsdomain.net. IN A 61.108.112.149
ns2.mydnsdomain.net. IN A 61.108.112.150
ftp.mydnsdomain.net. IN CNAME mydnsdomain.net.
www.mydnsdomain.net. IN CNAME mydnsdomain.net.
mydnsdomain.net. IN MX 10 mail.mydnsdomain.net.
============ END MASTER RECORD

4. Then, when I add a new domain, it points to the dns of the master domain which I setup as ns1 and ns2 above.

====== NEW DOMAIN SETTINGS INCLUDING MASTER DNS =

$TTL 86400

@ IN SOA ns.mydnsdomain.net. bm.myserver.com. (
1081307342 ; Serial
10800 ; Refresh
3600 ; Retry
604800 ; Expire
86400 ) ; Minimum

somedomain.com. IN NS ns.mydnsdomain.net
somedomain.com. IN NS ns2.mydnsdomain.net.
somedomain.com. IN A 67.108.100.110
mail.somedomain.com. IN A 67.18.100.110
webmail.somedomain.com. IN A 67.18.100.110
ftp.somedomain.com. IN CNAME somedomain.com.
www.somedomain.com. IN CNAME somedomain.com.
somedomain.com. IN MX 10 mail.somedomain.com.
============

Did I get it right?