If the Company goes for the availability of his option then as it requires creation of the Charge that may also involve some cost or expenses relating to charge and may have impact on the assets of the company and if default is made by the Company then it may have to loose its assets as however that will depend on the terms and conditions mentioned in the charge deed for the purpose between the interested parties.
Thus the company may go for raising fund through issuing debentures this may result into the increment of the creditors of the company which will take the fixed interest as agreed and repayment of the same invested money on the time as agreed.
If Company wants to go got issuing debentures then it is required to be a public one and if it agrees with the advantageous and suffer disadvantageous of the option 4 as discussed then it can go for the same. here the conditions as expressed by the existing members is that they want to have the full control over the company and little transparency then it may borrow loan privately and can get the advantage thereof being a private one .
Thus in all the above discussed option it is the discretions of the existing members which one to choose which may be based on the above logical discussion.